App Icon Resizer - A service to resize your app icon to all needed resolutions
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Resizing.app - Image resizing has never been so simple with free online resizing.app. Convert, optimize, resize images with ease and for absolutely free.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
ResizePixel - Free image editor to crop, resize, flip, rotate and convert images online
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.